.expandable-panel {
    position: relative;
    width: 100%;
}

.header {
    position: relative;
}

.panel {
    overflow: hidden;
    position: relative;
    box-sizing: border-box;
    height: 0;
    transition: height 0.3s cubic-bezier(0.34, 0.69, 0.1, 1);
}
